/* ============================================================
   成果展示系统 - 主样式表 v3
   严格还原Word文档排版 + 精美化设计 + 智能分页
   ============================================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* 主色 - 玉石青 */
    --jade-50:#f0fdf9; --jade-100:#ccfbef; --jade-200:#99f6e0;
    --jade-300:#5eead4; --jade-400:#2dd4bf; --jade-500:#14b8a6;
    --jade-600:#0d9488; --jade-700:#0f766e; --jade-800:#115e59; --jade-900:#134e4a;
    /* 辅助 - 雅金 */
    --gold-50:#fffbeb; --gold-100:#fef3c7; --gold-200:#fde68a;
    --gold-300:#fcd34d; --gold-400:#fbbf24; --gold-500:#f59e0b; --gold-600:#d97706; --gold-700:#b45309;
    /* 中性 */
    --gray-50:#f9fafb; --gray-100:#f3f4f6; --gray-200:#e5e7eb; --gray-300:#d1d5db;
    --gray-400:#9ca3af; --gray-500:#6b7280; --gray-600:#4b5563; --gray-700:#374151;
    --gray-800:#1f2937; --gray-900:#111827;
    /* 布局 */
    --header-h:60px; --nav-h:52px; --max-w:960px;
    --radius:10px; --radius-sm:6px;
    --shadow:0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md:0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg:0 10px 30px rgba(0,0,0,0.12);
    --shadow-xl:0 20px 50px rgba(0,0,0,0.15);
    --transition:all 0.25s cubic-bezier(0.4,0,0.2,1);
    /* 文档色 */
    --doc-bg:#ffffff;
    --doc-text:#333333;
    --doc-border:#d4d4d4;
}

html { scroll-behavior:smooth; scroll-padding-top:120px; }

body {
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Segoe UI",sans-serif;
    background:var(--gray-100);
    color:var(--gray-800);
    line-height:1.8;
    font-size:15px;
    -webkit-font-smoothing:antialiased;
}

img { max-width:100%; height:auto; display:block; }
a { color:var(--jade-600); text-decoration:none; transition:var(--transition); }
a:hover { color:var(--jade-700); }

/* ========== 阅读进度条 ========== */
.reading-progress {
    position:fixed; top:0; left:0; height:3px; z-index:1100;
    background:linear-gradient(90deg,var(--jade-400),var(--gold-400));
    transition:width 0.1s ease; width:0%;
}

/* ========== Header ========== */
.site-header {
    position:fixed; top:0; left:0; right:0; height:var(--header-h);
    background:rgba(255,255,255,0.96);
    backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--gray-200);
    z-index:1000; display:flex; align-items:center; padding:0 20px;
    transition:var(--transition);
}
.site-header.scrolled { box-shadow:var(--shadow); }
.header-inner {
    max-width:var(--max-w); width:100%; margin:0 auto;
    display:flex; align-items:center; justify-content:space-between;
}
.header-logo { display:flex; align-items:center; gap:10px; font-size:16px; font-weight:700; color:var(--gray-800); }
.header-logo .logo-icon {
    width:34px; height:34px;
    background:linear-gradient(135deg,var(--jade-500),var(--jade-700));
    border-radius:var(--radius-sm); display:flex; align-items:center; justify-content:center;
    color:white; font-size:16px;
    box-shadow:0 2px 8px rgba(13,148,136,0.3);
}
.header-nav { display:flex; align-items:center; gap:6px; }
.header-nav a {
    padding:7px 14px; border-radius:var(--radius-sm);
    color:var(--gray-500); font-size:13px; font-weight:500; transition:var(--transition);
}
.header-nav a:hover { background:var(--jade-50); color:var(--jade-700); }

/* ========== Hero ========== */
.hero {
    position:relative; margin-top:var(--header-h);
    padding:52px 24px 60px;
    background:
        linear-gradient(135deg,var(--jade-900) 0%,var(--jade-700) 40%,var(--jade-800) 100%);
    overflow:hidden; color:white;
}
/* 玉石纹理背景 */
.hero::before {
    content:''; position:absolute; top:-40%; right:-10%;
    width:550px; height:550px;
    background:radial-gradient(circle,rgba(45,212,191,0.15) 0%,transparent 70%);
    border-radius:50%;
}
.hero::after {
    content:''; position:absolute; bottom:-30%; left:-5%;
    width:400px; height:400px;
    background:radial-gradient(circle,rgba(251,191,36,0.1) 0%,transparent 70%);
    border-radius:50%;
}
/* 装饰线条 */
.hero-deco {
    position:absolute; bottom:0; left:0; right:0; height:4px;
    background:linear-gradient(90deg,
        var(--gold-400) 0%,var(--gold-500) 25%,
        var(--jade-400) 50%,var(--jade-500) 75%,
        var(--gold-400) 100%);
}
.hero-inner { position:relative; z-index:1; max-width:var(--max-w); margin:0 auto; text-align:center; }
.hero-badge {
    display:inline-block; padding:6px 20px;
    background:rgba(255,255,255,0.12); border:1px solid rgba(255,255,255,0.22);
    border-radius:100px; font-size:12px; font-weight:500; margin-bottom:22px;
    backdrop-filter:blur(8px);
    animation:fadeInDown 0.6s ease;
}
.hero-title {
    font-size:30px; font-weight:800; line-height:1.45; margin-bottom:14px;
    text-shadow:0 2px 12px rgba(0,0,0,0.15);
    animation:fadeInUp 0.7s ease;
    letter-spacing:1px;
}
.hero-subtitle {
    font-size:15px; opacity:0.85; margin-bottom:30px; max-width:680px; margin-left:auto; margin-right:auto;
    animation:fadeInUp 0.7s ease 0.15s both;
}
.hero-meta {
    display:flex; justify-content:center; gap:0; flex-wrap:wrap;
    animation:fadeInUp 0.7s ease 0.3s both;
    background:rgba(255,255,255,0.08); border-radius:var(--radius);
    padding:4px; max-width:fit-content; margin:0 auto;
    backdrop-filter:blur(8px);
}
.hero-meta-item {
    display:flex; flex-direction:column; align-items:center; gap:4px;
    padding:14px 28px;
    border-right:1px solid rgba(255,255,255,0.1);
}
.hero-meta-item:last-child { border-right:none; }
.hero-meta-item .meta-label { font-size:11px; opacity:0.6; text-transform:uppercase; letter-spacing:1px; }
.hero-meta-item .meta-value { font-size:15px; font-weight:600; }

@keyframes fadeInUp { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeInDown { from{opacity:0;transform:translateY(-16px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }
@keyframes slideIn { from{opacity:0;transform:translateX(20px)} to{opacity:1;transform:translateX(0)} }

/* ========== Module Nav ========== */
.module-nav {
    position:sticky; top:var(--header-h); z-index:900;
    background:white; border-bottom:1px solid var(--gray-200);
    box-shadow:var(--shadow);
    overflow-x:auto; -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
}
.module-nav::-webkit-scrollbar { display:none; }
.module-nav-inner {
    display:flex; max-width:var(--max-w); margin:0 auto;
    padding:0 12px; min-width:max-content;
}
.module-nav-item {
    flex-shrink:0; padding:14px 18px; font-size:14px; font-weight:500;
    color:var(--gray-500); cursor:pointer; transition:var(--transition);
    position:relative; white-space:nowrap; border:none; background:none;
    display:flex; align-items:center; gap:7px;
}
.module-nav-item:hover { color:var(--jade-600); }
.module-nav-item.active { color:var(--jade-700); font-weight:600; }
.module-nav-item.active::after {
    content:''; position:absolute; bottom:0; left:14px; right:14px;
    height:3px; background:linear-gradient(90deg,var(--jade-400),var(--jade-600)); border-radius:3px 3px 0 0;
}
.module-nav-item .nav-num {
    display:inline-flex; align-items:center; justify-content:center;
    width:22px; height:22px; border-radius:50%;
    background:var(--gray-100); color:var(--gray-500);
    font-size:11px; transition:var(--transition);
    font-weight:600;
}
.module-nav-item.active .nav-num {
    background:linear-gradient(135deg,var(--jade-500),var(--jade-600)); color:white;
    box-shadow:0 2px 6px rgba(13,148,136,0.3);
}

/* ========== Content Area ========== */
.content-area { max-width:var(--max-w); margin:0 auto; padding:32px 24px 60px; }

/* 文档容器 - 模拟纸张效果 */
.doc-page {
    background:white; border-radius:var(--radius);
    box-shadow:0 1px 3px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.06);
    overflow:hidden;
    margin-bottom:24px;
    animation:pageIn 0.35s ease;
    border:1px solid var(--gray-200);
}

@keyframes pageIn {
    from { opacity:0; transform:translateY(12px); }
    to { opacity:1; transform:translateY(0); }
}

.doc-content {
    padding:44px 52px;
    position:relative;
}

/* 模块标题栏 */
.module-header {
    display:flex; align-items:center; justify-content:space-between;
    padding-bottom:16px; margin-bottom:24px;
    border-bottom:2px solid var(--gray-100);
}
.module-title-wrap {
    display:flex; align-items:center; gap:12px;
}
.module-title-bar {
    width:5px; height:26px;
    background:linear-gradient(180deg,var(--jade-400),var(--jade-600));
    border-radius:3px;
}
.module-title {
    font-size:22px; font-weight:700; color:var(--gray-800);
}
.module-info {
    font-size:12px; color:var(--gray-400);
    background:var(--gray-50); padding:6px 14px; border-radius:100px;
    border:1px solid var(--gray-200);
}

/* ========== 文档内容排版 ========== */

/* 标题样式 - 严格按Word文档 */
.doc-heading {
    font-weight:700; margin-top:28px; margin-bottom:14px;
    color:var(--gray-800); line-height:1.5;
    scroll-margin-top:120px;
}
.doc-heading[data-level="1"] {
    font-size:20px; padding-left:14px;
    border-left:4px solid var(--jade-500);
    margin-top:36px;
}
.doc-heading[data-level="2"] {
    font-size:18px; color:var(--jade-800);
    margin-top:28px;
    padding-left:10px;
    border-left:3px solid var(--jade-300);
}
.doc-heading[data-level="3"] {
    font-size:16px; color:var(--gray-700);
    margin-top:22px;
}
.doc-heading[data-level="4"] {
    font-size:15px; color:var(--gray-600);
    margin-top:18px;
}

/* 文档标题（居中大字） */
.doc-title-main {
    text-align:center; font-family:"FangSong","STFangsong","仿宋",serif;
    font-size:26px; font-weight:normal; margin-bottom:8px;
    letter-spacing:2px;
}
.doc-title-sub {
    text-align:center; font-family:"FangSong","STFangsong","仿宋",serif;
    font-size:22px; font-weight:bold; margin-bottom:4px;
}
.doc-title-book {
    text-align:center; font-family:"SimHei","黑体",sans-serif;
    font-size:36px; font-weight:bold; margin:20px 0 30px;
    letter-spacing:4px;
}

/* 正文文本 */
.doc-text {
    font-size:14px; line-height:2; color:var(--doc-text);
    text-align:justify; margin-bottom:10px;
    text-indent:2em;
}
.doc-text[data-align="center"] { text-align:center; text-indent:0; }
.doc-text[data-align="right"] { text-align:right; text-indent:0; }
.doc-text[data-align="left"] { text-align:left; }
.doc-text[data-bold="true"] { font-weight:700; }

/* 图片 */
.doc-image {
    margin:20px 0; text-align:center;
}
.doc-image img {
    max-width:100%; border-radius:var(--radius-sm);
    box-shadow:var(--shadow); cursor:pointer;
    transition:var(--transition); margin:0 auto;
    border:1px solid var(--gray-200);
}
.doc-image img:hover {
    box-shadow:var(--shadow-lg); transform:translateY(-2px) scale(1.01);
}
.doc-image .image-caption {
    text-align:center; font-size:12px; color:var(--gray-400);
    margin-top:8px; font-style:italic;
}

/* 视频播放器 */
.doc-video { margin:20px 0; }
.doc-video video {
    width:100%; border-radius:var(--radius); box-shadow:var(--shadow-lg); background:#000;
}

/* ========== 表格样式 ========== */
.doc-table-wrap {
    margin:22px 0; overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    border-radius:var(--radius-sm);
    box-shadow:var(--shadow);
}
.doc-table {
    width:100%; border-collapse:collapse; font-size:13px;
    background:white; border-radius:var(--radius-sm); overflow:hidden;
}
.doc-table th, .doc-table td {
    border:1px solid var(--doc-border); padding:10px 12px;
    text-align:left; vertical-align:top; word-break:break-word;
}
.doc-table thead th {
    background:linear-gradient(135deg,var(--jade-600),var(--jade-700));
    color:white; font-weight:600; white-space:nowrap;
    border-color:var(--jade-500);
}
.doc-table tbody tr:nth-child(even) { background:var(--gray-50); }
.doc-table tbody tr:hover { background:var(--jade-50); }
.doc-table td img {
    max-width:200px; border-radius:4px; margin:4px auto;
    cursor:pointer; transition:var(--transition);
    border:1px solid var(--gray-200);
}
.doc-table td img:hover { box-shadow:var(--shadow-md); transform:scale(1.02); }
.doc-table .cell-text { margin-bottom:4px; line-height:1.7; }

/* 单列表格（通常是图片列表） */
.doc-table.single-col td { text-align:center; padding:16px; }
.doc-table.single-col td img { max-width:500px; margin:0 auto; }

/* ========== 分页 ========== */
.pagination-bar {
    display:flex; flex-direction:column; align-items:center; gap:12px;
    margin:36px 0 16px;
}
.pagination-info {
    font-size:12px; color:var(--gray-400);
    display:flex; align-items:center; gap:8px;
}
.pagination-info .current {
    color:var(--jade-600); font-weight:700; font-size:14px;
}
.pagination {
    display:flex; align-items:center; justify-content:center;
    gap:6px; flex-wrap:wrap;
}
.pagination button {
    min-width:38px; height:38px; padding:0 12px;
    border:1px solid var(--gray-200); background:white;
    border-radius:var(--radius-sm); font-size:13px; color:var(--gray-600);
    cursor:pointer; transition:var(--transition);
    display:flex; align-items:center; justify-content:center;
    font-weight:500;
}
.pagination button:hover:not(:disabled) {
    border-color:var(--jade-400); color:var(--jade-600);
    background:var(--jade-50); transform:translateY(-1px);
    box-shadow:var(--shadow);
}
.pagination button.active {
    background:linear-gradient(135deg,var(--jade-500),var(--jade-600));
    color:white; border-color:var(--jade-500); font-weight:600;
    box-shadow:0 2px 8px rgba(13,148,136,0.3);
}
.pagination button:disabled {
    opacity:0.35; cursor:not-allowed;
}
.pagination .page-ellipsis {
    color:var(--gray-400); padding:0 4px; user-select:none;
}

/* ========== 空状态/错误 ========== */
.empty-state, .error-state {
    text-align:center; padding:60px 20px; color:var(--gray-400);
}
.empty-state .empty-icon, .error-state .error-icon {
    font-size:42px; margin-bottom:14px; opacity:0.5;
}
.error-state .retry-btn {
    margin-top:16px; padding:10px 28px;
    background:linear-gradient(135deg,var(--jade-500),var(--jade-600));
    color:white; border:none;
    border-radius:var(--radius-sm); font-size:13px; cursor:pointer;
    transition:var(--transition); font-weight:500;
    box-shadow:0 2px 8px rgba(13,148,136,0.3);
}
.error-state .retry-btn:hover { transform:translateY(-1px); box-shadow:var(--shadow-md); }

/* ========== 加载动画 ========== */
.loader {
    display:flex; flex-direction:column; align-items:center; justify-content:center;
    min-height:300px; gap:14px;
}
.loader-spinner {
    width:42px; height:42px;
    border:3px solid var(--jade-100); border-top-color:var(--jade-500);
    border-radius:50%; animation:spin 0.8s linear infinite;
}
@keyframes spin { to{transform:rotate(360deg)} }

/* ========== 灯箱 ========== */
.lightbox {
    position:fixed; inset:0; background:rgba(0,0,0,0.92);
    z-index:9999; display:flex; align-items:center; justify-content:center;
    padding:40px; opacity:0; visibility:hidden;
    transition:opacity 0.3s,visibility 0.3s;
    backdrop-filter:blur(4px);
}
.lightbox.active { opacity:1; visibility:visible; }
.lightbox img {
    max-width:92%; max-height:90vh; border-radius:var(--radius);
    box-shadow:0 20px 60px rgba(0,0,0,0.5);
    animation:lightboxIn 0.3s ease;
}
@keyframes lightboxIn {
    from { opacity:0; transform:scale(0.95); }
    to { opacity:1; transform:scale(1); }
}
.lightbox-close {
    position:absolute; top:16px; right:24px;
    width:42px; height:42px; border-radius:50%;
    background:rgba(255,255,255,0.1); border:none; color:white;
    font-size:24px; cursor:pointer;
    display:flex; align-items:center; justify-content:center;
    transition:var(--transition);
}
.lightbox-close:hover { background:rgba(255,255,255,0.2); transform:rotate(90deg); }
.lightbox-nav {
    position:absolute; top:50%; transform:translateY(-50%);
    width:48px; height:48px; border-radius:50%;
    background:rgba(255,255,255,0.1); border:none; color:white;
    font-size:24px; cursor:pointer;
    display:flex; align-items:center; justify-content:center;
    transition:var(--transition);
}
.lightbox-nav:hover { background:rgba(255,255,255,0.2); }
.lightbox-nav.prev { left:24px; }
.lightbox-nav.next { right:24px; }
.lightbox-counter {
    position:absolute; bottom:24px; left:50%; transform:translateX(-50%);
    color:rgba(255,255,255,0.7); font-size:13px;
    background:rgba(0,0,0,0.4); padding:6px 16px; border-radius:100px;
}

/* ========== Footer ========== */
.site-footer {
    background:var(--gray-800); color:var(--gray-400);
    padding:32px 24px; text-align:center; font-size:13px;
}
.site-footer .footer-line {
    width:40px; height:3px;
    background:linear-gradient(90deg,var(--jade-400),var(--gold-400));
    border-radius:3px; margin:0 auto 16px;
}

/* ========== 滚动到顶部按钮 ========== */
.scroll-top-btn {
    position:fixed; bottom:24px; right:24px;
    width:44px; height:44px; border-radius:50%;
    background:linear-gradient(135deg,var(--jade-500),var(--jade-600));
    color:white; border:none; cursor:pointer;
    display:flex; align-items:center; justify-content:center;
    font-size:20px; box-shadow:var(--shadow-lg);
    opacity:0; visibility:hidden; transition:var(--transition);
    z-index:800;
}
.scroll-top-btn.visible { opacity:1; visibility:visible; }
.scroll-top-btn:hover { transform:translateY(-3px); }

/* ========== 响应式 ========== */
@media (max-width:768px) {
    :root { --header-h:52px; }
    .hero { padding:32px 16px 40px; }
    .hero-title { font-size:20px; }
    .hero-subtitle { font-size:13px; }
    .hero-meta { flex-direction:column; gap:0; padding:0; background:transparent; }
    .hero-meta-item {
        padding:10px 20px; border-right:none;
        border-bottom:1px solid rgba(255,255,255,0.08);
        background:rgba(255,255,255,0.06);
        border-radius:var(--radius-sm); margin-bottom:6px;
        flex-direction:row; gap:10px; justify-content:space-between;
    }
    .hero-meta-item:last-child { border-bottom:none; }

    .module-nav-item { padding:11px 13px; font-size:12px; }
    .module-nav-item .nav-num { width:18px; height:18px; font-size:10px; }

    .content-area { padding:20px 12px 40px; }
    .doc-content { padding:24px 18px; }

    .module-header { flex-direction:column; align-items:flex-start; gap:8px; }
    .module-title { font-size:18px; }

    .doc-title-main { font-size:20px; }
    .doc-title-sub { font-size:17px; }
    .doc-title-book { font-size:26px; margin:14px 0 20px; }

    .doc-heading[data-level="1"] { font-size:17px; }
    .doc-heading[data-level="2"] { font-size:15px; }
    .doc-heading[data-level="3"] { font-size:14px; }

    .doc-text { font-size:13px; line-height:1.85; }

    .doc-table { font-size:12px; }
    .doc-table th, .doc-table td { padding:8px 10px; }
    .doc-table td img { max-width:140px; }
    .doc-table.single-col td img { max-width:280px; }

    .header-nav { display:none; }
    .lightbox { padding:16px; }
    .lightbox-nav { width:38px; height:38px; font-size:20px; }
    .lightbox-nav.prev { left:8px; }
    .lightbox-nav.next { right:8px; }

    .pagination button { min-width:34px; height:34px; font-size:12px; padding:0 8px; }

    .scroll-top-btn { bottom:16px; right:16px; width:40px; height:40px; }
}

@media (max-width:480px) {
    .hero-title { font-size:17px; }
    .doc-title-book { font-size:22px; }
    .doc-content { padding:18px 14px; }
    .doc-text { font-size:12.5px; }
}

/* ========== 打印样式 ========== */
@media print {
    .site-header, .module-nav, .pagination-bar, .scroll-top-btn, .reading-progress { display:none !important; }
    .hero { display:none !important; }
    .doc-page { box-shadow:none; border:none; }
    .doc-content { padding:0; }
}

/* ========== 防复制措施 ========== */
body {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
img {
    -webkit-user-drag: none;
    -webkit-touch-callout: none;
    pointer-events: auto;
}